Hunan Heou Engineering Consulting Co., Ltd
Hunan Heou Engineering Consulting Co., Ltd
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Lightning arrester, surge arrester.
(1) An electrical apparatus used to protect electrical equipment from high transient overvoltage hazards and to limit the duration and often the magnitude of the renewal current. The term includes any external clearance necessary for the normal function of the appliance when installed in operation, regardless of whether it is a component of the whole.
Note 1: Lightning arresters are usually connected between the grid conductors and the ground, however, they are sometimes connected next to the electrical windings or between the conductors.
Note 2: Lightning arresters are sometimes called overvoltage protectors, overvoltage limiters (surge divider)
(2) lightning arrester is another important device often used to prevent lightning damage to communication cables.
Definition
Lightning arrester: An electrical appliance used to protect electrical equipment from high transient overvoltage hazards during lightning strikes and to limit the duration of the renewal current, and often also the renewal current amplitude. Lightning arrester is sometimes also called overvoltage protector, overvoltage limiter. As shown in Figure 1 is a lightning arrester.
Features and Principles
AC gapless metal oxide lightning arrester has excellent nonlinear volt-ampere characteristics, good response characteristics, no renewal current, large through-current capacity, low residual voltage, strong overvoltage suppression capability, dirt resistance, anti-aging, not subject to altitude constraints, simple structure, no gap, tight sealing, long life, etc.
This arrester in the normal system working voltage, showing high resistance state, only microampere current through. It presents low resistance under the action of over-voltage high current, thus limiting the residual voltage at both ends of the arrester
| Normal service conditions:
1. The ambient temperature: -40°C ~+40°C 2. The altitude above sea level :not exceed 1000-2000m (the altiplano area should be indicated when order) 3. Earthquake intensity: not higher than 7 degrees; 4. Maximum wind velocity :less than 35m/s. 5. The filthy area should be given clear indication.
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| Feature:
The zinc oxide surge arrester is the most advanced over-voltage protector in the world. Due to make the resistor disc of core component mainly adopt zinc oxide arrester. Compared with the conventional siliconcarbide arrester, this prescription of the product improves greatly the volt-ampere characteristics of the resistor disc and increase through- current capability at over-voltage so as to bring a rad local-changes for the characteristics of the arresters. |
Q: Can we get a sample for reference?
A: Yes, as long as the goods are conventional type, and you will be charged sample cost plus related shipping cost. Once you place an order to us, we can return or deduct the sample cost to you.
Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days.
Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally within 25-35days upon the receipt of advance payment.